PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-09:57:40
G10     305.3          54.1                4.6 +/-    1.05       5.6 +/-    1.05  0.230 / 0.470
G14     212.3          14.2                4.1 +/-    2.68      10.4 +/-    2.68  0.160 / 0.640
G15     45.5           22.3                2.1 +/-    0.54       4.3 +/-    0.54  0.050 / 0.070
G20     67.7           30.4                4.2 +/-    0.57       7.3 +/-    0.57  0.060 / 0.070
G21     112.2          69.6                7.4 +/-    0.62       7.8 +/-    0.62  0.060 / 0.150
G24     91.9           28.4                4.2 +/-    0.67       7.6 +/-    0.67  0.060 / 0.120
G27     293.3          36.6                5.9 +/-    1.15       9.1 +/-    1.15  0.050 / 0.040
G32     213.0          38.8                7.5 +/-    0.55      11.1 +/-    0.55  0.040 / 0.040